EASY
AS and A Level
IMPORTANT
Earn 100

Calculate the gravitational field strength close to the surface of the Moon.

Important Questions on Gravitational Fields

MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 17 - Gravitational Fields>Questions>Q 4

Calculate the gravitational field strength close to the surface of the Sun. 

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 17 - Gravitational Fields>Questions>Q 4
Suggest how your answers help to explain why the Moon has only a thin atmosphere, while the Sun has a dense atmosphere. 
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 17 - Gravitational Fields>Questions>Q 5

Calculate the Earth's gravitational field strength at the position of the Moon. 

MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 17 - Gravitational Fields>Questions>Q 5
Calculate the force the Earth exerts on the Moon. Hence, determine the Moon's acceleration towards the Earth. 
MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 17 - Gravitational Fields>Questions>Q 6
Jupiter's mass is 320 times that of the Earth and its radius is 11.2 times the Earth's. The Earth's surface gravitational field strength is9.81 Nkg-1. Calculate the gravitational field strength close to the surface of Jupiter.
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 17 - Gravitational Fields>Questions>Q 7
The Moon and the Sun both contribute to the tides on the Earth's oceans. Which has a bigger pull on each kilogram of seawater, the Sun or the Moon? 
MEDIUM
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 17 - Gravitational Fields>Questions>Q 8

Astrologers believe that the planets exert an  influence on us, particularly at the moment of birth. (They don't necessarily believe that this is an effect of gravity!) Calculate the gravitational force on a 4.0 kg baby caused by Mars when the planet is at its closest to the Earth at a distance of 100 000 000 km. Mars has a mass  6.4×1023kg.

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 17 - Gravitational Fields>Questions>Q 8

Astrologers believe that the planets exert an influence on us, particularly at the moment of birth. (They don't necessarily believe that this is an effect of gravity!). Calculate the gravitational force on the same baby due to its 50 kg mother at a distance of 0.40m.